Government Agencies
U.S Geological Survey (USGS)
U.S. Census Bureau
U.S. Fish & Wildlife Service U.S. Environmental Protection Agency (EPA)
Contra Costa County
Associations Bay Area Automated Mapping Association (BAAMA) Urban and Regional Information Systems Association (URISA) Association of American Geographers (AAG)
Private Organizations
Environmental Systems Research Institute (ESRI) Autodesk MapInfo Intergraph Corporation
Resources
National Center for Geographic Information & Analysis (NCGIA)
Federal Geographic Data Committee (FGDC) Geospatial Innovation Facility (GIF) Geodata.gov GeoCommunity
TerraServer
Locational Services Google Maps Bing Maps Yahoo Maps MapQuest GIS Tools Google Earth